isometric external rotation at 90° elbow flexion with manual resistance from opposite hand.
Stand, bend the elbow to 90 degrees such that hand facing forward, rotate the arm outward keeping elbow close to the trunk. Place other hand outer aspect of the wrist, further rotate the arm away from the body against the resistance of other hand. Release the pull and repeat.
Nothing here is a prescription. Your physiotherapist decides which of these are yours, and when.
